Relay for wireless signaling systems



I F. s. mccuuou'e'n.

RELAY FOR WIRELESS SIGNALING SYSTEMS. I APPLICLKTIONIHLED SEPT.- H1L9H); I 1,403,701. Patented Jan. 17, 1922.

. jzzveazbz: min mums/1 UN D STATES PATE T OFFiQET FREDERICK SMcGULLOUG-H, 0F CLEVELAND, OHIO, ASSIGNOREGAGLENN L HAR'IUT,

' OF CLEVELAND, OHIQ.

RELAY non wmnness smnanme sysrnars.

Original application filed January 22, 1917, sci-1&1 No. 143,560.Divided and all; application an fle itember 11, 1919.eria1-'N o.323,065.

To all whom it may concern: 1 Be it known that I, FREDERICK S. McCallLoUcH, a citizen of the United States, resident of Cleveland, county ofCuyahoga, and

' State of Ohio, have invented new and useful-Improvements in Relays forWireless Signaling Systems, of. which the following is a specification,the principle of the in-j vention being herein explained and thebestmode in which I have contemplated ap plying that. principle, .so asto distinguish it from other inventions.

This invention relates to relays for-Wireless signaling systems, and isherein shown and described as embodied in'a'system for signalingelevators and embodies subject'- matter divided'out of originalapplication Serial No. 143,560, filed January'22, 1917..- An essentialobject is toprovide a simple, efficient means for actuating signals inelfevator cars and on the-various floors of the building, and whichshall be comparati'vely cheap to manufacture and not liable to get outof order. s

In the system use a high frequency generator preferably connected by asingle wire with capacity members arranged at the several floors for oneelevator car or a plurality of elevators in a bank. I arrange capacitymembers on' the car adapted to be brought into proximity with thesuccessivecapacitymembers for the floors so that when a signal switch isactuated on any floor it may connect the corresponding capacity memberwith the. generating means and cause energy to be transmitted across theair dielectric from one capacity to the other while they are adjacent,and I arrange on the elevator car a relay adapted to be actuated by theelectric impulse passing from one capacity to-th'e other,

This relay may control a visual or audible signal on the elevator car.

To make the system more complete 1 may arrange an additional capacityplate on each car at each floor and a relay on each-floor to actuate asignal indicating that a car is about to respond to the signal of thewaiting passenger.

,My invention is hereinafter more fully described in connection with thedrawings,

1 'which illustrate a convenient arrangement thereof, and the essentialcharacteristics of the invention are set forth in the claims.

disclosed'in said patent I;

. Figurel is a side elevation of the'relay;

Figure 2 is an axial section thereof; Figure 3 is a transversehorizontal section' taken substantially'on the line- 3-3 of Figure'el isa similar section taken substantially on the line 4--4 of Figure 2.

' I Figure 5 is a section onthe line'55 of Figure 2.

For, actuation of the signals on the car and on' the variousfloors Iprovi e relays such as disclosed herein-which .a-re'sovcon structed asto be aetuatedby that form of energy which surrounds a. wire connectedwith one terminal of a high potential transformer connected with 'a high-fr'equenc y generator and which energy does not de lpendyfor. itsexistence upon any: return or ground wires. I have found in actualpracties. that such -a relay can be actuated through a single wire soconnected. even when the wire is divided'by' capacit'y'plates separatedby an air gap of" several inches.

Thus bya'bringing such capacitiestogether- I accomplish the selectivesignaling .de-I scribed, One form of such a relay is illustrated inFigures 1 to'5-inclusiveandmay be constructed as follows i At 7 0 isindicated a suitable support on which is mounted a block or casing -7lpreerably of insulating material. Two lateral.

extensions 72 and 73 of this casing areconnected by a cylindricalmember-75 which encloses, a substantially ,g cylindrical space thinsheets of metal. 'At 78 'areindicatedf too-acting wings adapted to beinterposed be-' tween the leaves 7 7 and carried on a revoluble andvertically movable spindle 80.shown as supported by? a spring 81 at itsupper end adjustably carried by a screw 82, threaded through a sleeve83- to which it may be locked by a nut 84:. The sleeve 83 is externallythreaded and emphasized by a nut 85 which may provide a bindingpost forthe wire leading to the relay and corresponding to the wire 19;

Specification of Letters Patent ,Patentd an 17," 1922: l

The spindle 8O is provided with a down ward extension 86 insulatedtherefrom and adapted to contact with a plate 87 connecte'd with abattery (SS-which is included in one-of the signal light circuits, theconnection being-made through a wire 89 which is'so coiled about theeXtension'SG as not to interfere with its rotation or vertical movement.A'suitable cap 90 supports the plate 87 and protects the contact 86.

This relay depends for its operation upon the} attraction of one a'irelectrode to another when charged With the energy which -follows-a wireconnected with a source of high frequency current of a high. potential When the field of energy surrounds the Wire leading to therelay, thewings 7 8 are caused to move downwardly and turn slightly with-,

inv the cage 76 by their attraction to the leaves 77; This action occurswhen the capacity plates are 1n proximity and after the.

energizing of one of the push button signal circuitswhich causes therelay to make a contact at 86- and 87, whereu on the light .10 becomesincandescent.

I found by experiment that thisrelay may be constructediin manydiil'erent ways, the

essential features being an electrode attracted to some other object,and I have also found thatthe action may be augmented by the use of asmall resistance wire. which heats when, the energy passes; along-thesame. Accordingly I may make the coil spring 81 of such wire so that itsexpansion,

due to the heating, mayincrease and make morepositive contact.

the movement of the relay a wire supporting said spindle, said wire wirespring supporting said spindle andadapted to be heated by the electricenergy I conveyed to the relay.

4:. In a signaling system, a static relay having. in combination, fixedplates, a movable spindle, vanes attached to said spindle, said p atesand vanes being set so as to make an an le less than ninety degrees withsaid spindle, and a Wire supporting said spindle and adapted to expandwhen electric energy is conveyed by it:

- 5. In a signaling system, a static relay having, in combination, fixedplates, a movable spindle, vanes attached to said spindle, saidplatesand said vanes being set at angles less than ninety degrees with saidspindle, a spring supporting said spindle, and a contact member attachedto said spindle.

,6. In a signaling system, a relay having, incombination, stationaryplates, a movable spindle, vanes attached to said spindle. said platesand said vanes being set at an angle with said spindle, so that whenthey are attracted by each other, said spindle. will be caused to rotateand to move longitudinally.

7. In a signaling system, a relay having, in combination, stationaryplates, a movable spindle, vanes attached to said spindle. said platesand said vanes being set at an angle other than ninety degrees with saidspindle, aconducting support for said spindle adapted to expand whenconveying electric energy. said plates and vanes and said conductingsupport coacting to move said spindle longitudinally.

Signed by me, this 8th day of September, 1919.

FREDERICK s. MoCULLOUGH.

